Exhaust system and method for mitigating degradation of components of a turbocharged engine with exhaust gas recirculation

摘要

A system and method for controlling an engine is described. In one example, an actuator is adjusted to reduce the possibility of degradation of an engine component. The method may provide increase engine compon ent operational life so as to improve engine emissions during the life cycle of the engine.

主权项

1. An engine system, comprising:
an engine including intake and exhaust camshafts and at least one component other than an emissions after treatment device or emissions sensor; an exhaust system coupled to the engine; a particulate sensor positioned in an exhaust system; and a controller including instructions stored in non-transitory memory for adjusting a position of the intake and exhaust camshafts to limit degradation of the at least one component in response to an output of the particulate sensor, and further instructions for adjusting an amount of reductant injected to the exhaust system in response to condensation of reductant indicated via the particulate sensor.